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Types of Triangles - Lesson 3-6

Today, we talked about classifying different types of triangles.  These are shown below.  Make sure you know them all!  We began by classifying triangles by the measures of their angles:

Definition of Acute Triangles

Definition of Obtuse Triangles

Definition of Right Triangle


And we finished the day by classifying triangles by the lengths of their sides:

Definition of Scalene Triangle

Definition of Isosceles Triangle

Definition of Equilateral Triangle

We then did an example proof that used some of these classifications:

Example Proof

Other Links
Class Notes
Lesson 3-1
Lesson 3-2
Lesson 3-3
Lesson 3-4
Quiz Topics
Lesson 3-5
Lesson 3-6
Lesson 3-7
Lesson 3-8
Test Topics
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